Abstract
California bearing ratio is an empirical test and over the world, it is used for designing the flexible pavement. This method was developed by California Highway Department in 1928. The tests results are used in pavement design, in the duration of second world war. Aim of the study: the main aim of the study is design of flexible pavement using the C.B.R. method Material and method: Tests including Atterberg's (liquid and plastic) limits, shrinkage limits, differential free swelling and swelling pressure as well as OMC and MDD as well as the UCS have all been done to develop the flexible pavement utilising black cotton soil and slurry of Kota stone. Conclusion: Tests are also used to establish the engineering characteristics. The Atterberg's limits (Liquid Limit, Plastic Limit, Plasticity Index), sieve analysis, standard proctor test, and California Bearing Ratio are used to investigate the behaviour of black cotton soil with varying percentages of Kota stone slurry
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